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Power Control for Mc-Cdma System with Predicted Csi Using Water Filling Algorithm
2014
IOSR Journal of Electronics and Communication Engineering
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the channel state information. ...
The water filling provides optimal solution if the channel state information is perfect. ...
with predicted Channel State information in order to improve the capacity of the MC-CDMA system in realistic high mobility environments. ...
doi:10.9790/2834-09512430
fatcat:3qiidcyubfdmlgvgrdjnrtk7sy
Software-defined-radio-assisted adaptive broadband frequency hopping multicarrier DS-CDMA
2002
IEEE Communications Magazine
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In the short term, the proposed FH/MC DS-CDMA scheme could be employed in the existing second-and third-generation CDMA system bands. ...
This article presents a versatile broadband multiple access scheme, combining frequency hopping with multicarrier DS-CDMA (FH/MC DS-CDMA). ...
This channel state information can be utilized for coherent demodulation. ...
doi:10.1109/35.989783
fatcat:bv2tses7sjbk5lh2plvrika4xa
Band Based Dynamic Link Adaptation for MC-CDMA Radio Interface
2006
IEEE Vehicular Technology Conference
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This paper studies adaptive power allocation among sub-carriers in MC-CDMA. ...
(in accordance with their channel state). ...
In the absence of CSI (Channel State Information) at transmitter, MC-CDMA relies on fixed FEC (Forward Error Correction) coding, bit interleaving [2] and frequency hopping [3] across the sub-carriers ...
doi:10.1109/vtcf.2006.171
dblp:conf/vtc/HamidHT06
fatcat:6tejqagdczbabft5xsyoiuarcy
Adaptivity in MC-CDMA Systems
[chapter]
2006
Multi-Carrier Spread-Spectrum
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This paper investigates the performance of MC-CDMA with link adaptation in the uplink of a wireless communication system. ...
Two types of link adaptation approaches can be distinguished: 1) Exploitation of channel state information (CSI) at the transmitter and 2) exploitation of CSI at both the transmitter and the receiver. ...
Different approaches for link adaptation depending on the availability of channel state information (CSI) in the system are considered. ...
doi:10.1007/1-4020-4437-2_4
fatcat:l6xsg5hhkvefrb6xi7qs6xnf2q
Performance Evaluation of Adaptive Modulation Based MC-CDMA System
2013
Wireless Engineering and Technology
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Adaptive modulation, in conjunction with MC-CDMA transmission system is very assuring way to increase data rate. ...
In this paper, adaptive modulation based M-ary QAM, M-PSK and M-ary CPM systems applied to a MC-CDMA system in Rayleigh fading channel environment have been investigated and BER performances of all these ...
Performance Evaluation of Adaptive Modulation Based MC-CDMA System ...
doi:10.4236/wet.2013.41008
fatcat:4rfomksonvhr7hww5opdckm6ru
A Novel Channel Estimation Technique in MIMO-OFDM Mobile Communication Systems
2020
International journal of new practices in management and engineering
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The dynamic estimation of channel state information can be obtained through Enhanced Least Squares channel estimation algorithm. It is based on Multi Carrier Filter Bank Transmission system. ...
In any wireless terminal, channel state information provides the in and around status of the channel. ...
A set of exponential orthogonal codes with selecting a suitable spreading code enhances the synchronization. It does not need any channel state information at the transmitter side. ...
doi:10.17762/ijnpme.v9i02.84
fatcat:sef3gghdkbeh5disfxytcl53me
THE OPTIMISTIC ADAPTIVE MODULATION TECHNIQUE FOR FUTURE WIRELESS COMMUNICATION
2013
Journal of Computer Science
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The outputs of various modulation schemes are plotted for both OFDMA and MC-CDMA systems. ...
andIPv6 facility to enhance error free communication. ...
any of the parameters according to the state of the channel. ...
doi:10.3844/jcssp.2013.500.513
fatcat:esiobz3l5jcvpjuh4hvbzmn4pi
Performance of adaptive MC-CDFMA detectors in rapidly fading rayleigh channels
2003
IEEE Transactions on Wireless Communications
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Index Terms-Adaptive detection, channel estimation, multicarrier code-division multiple-access (MC-CDMA) detection, multicarrier-CDMA, orthogonal frequency division multiplexing (OFDM)-CDMA. ...
In this paper, we examine the forward-link performance of decision-directed adaptive detection schemes, with and without explicit channel estimation, for MC-CDMA systems operating in fast fading channels ...
Finally, our approach, introduced in part in [16] , is to consider decision-directed, adaptive MC-CDMA detectors. ...
doi:10.1109/twc.2003.808960
fatcat:kl5m36aucnbo3gngi7infn6ryq
Performance analysis of synchronous MC-CDMA in mobile Rayleigh channel with both delay and Doppler spreads
2001
IEEE Transactions on Vehicular Technology
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Index Terms-Doppler effect, fading channels, intercarrier interference, multicarrier code division multiple access (MC-CDMA), multicarrier modulation, orthogonal frequency division multiplexing (OFDM), ...
Also, we evaluate the transmission capacity per subcarrier to quantify the potential of MC-CDMA and (coded-) OFDM. ...
CHANNEL CAPACITY Comparison between the BER for of MC-CDMA and uncoded OFDM is unfair in the sense that OFDM can exploit channel state information about fading subcarriers in its error correction decoder ...
doi:10.1109/25.966570
fatcat:aanvhkcdmrh27p6xwmh3p2neea
Adaptive Carrier Interferometry MC-CDMA
2006
IEEE Transactions on Vehicular Technology
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An adaptive carrier interferometry (CI) scheme is proposed for multicarrier code-division multiple-access (MC-CDMA) systems where it is assumed that there is a feedback channel between the receiver and ...
conventional CI-MC-CDMA systems in which a constant amplitude is set for all the carriers. ...
amplitudes are varied adaptively in ACI-MC-CDMA according to the channel conditions. ...
doi:10.1109/tvt.2006.874583
fatcat:7f3mpwsfifezpcnzdedrjulliu
Enabling Dynamic Spectrum Access using SS-MC-CDMA
2007
2007 2nd International Conference on Cognitive Radio Oriented Wireless Networks and Communications
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We name this robust scheme selective subcarrier multi-carrier code division multiple access (SS-MC-CDMA). This paper contains three main contributions. ...
Firstly, the reconfigurability options in a physical layer (PHY) using MC-CDMA and the flexibility in system design of a cognitive radio are presented. ...
The initial state of the secondary user is DS-CDMA system. ...
doi:10.1109/crowncom.2007.4549796
dblp:conf/crowncom/SarathNSD07
fatcat:falzp56hzvbw3bl7cala5isxni
MC-CDMA based SDR for Next Generation Wireless Communication
2013
International Journal of Computer Applications
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In this paper, MC-CDMA based SDR system is constructed using super orthogonal turbo codes with log-MAP algorithm. ...
In MC-CDMA system, when the orthogonality is not maintained in the OFDM part, it leads to multiple access interference (MAI). ...
The physical layer is enabled with existing systems so that it becomes adaptable to SDR technology. MC-CDMA system is made adaptable to SDR [1] to support future wireless communication systems. ...
doi:10.5120/12800-9885
fatcat:nytaa562gze4joa6xilmlnuvg4
A tutorial on multiple access technologies for beyond 3G mobile networks
2005
IEEE Communications Magazine
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TD-CDMA is appropriate to share the information because it uses the same channel on both uplink and downlink. It is also easy to share channel information between two stations. ...
Thus, the base station should frequently send power control information to every user. MC-CDMA has several advantages over DS-CDMA. ...
doi:10.1109/mcom.2005.1391509
fatcat:cakaqemqznhubepwvoifzvy3qy
Multiple Access Technologies for Beyond 3G Wireless Cellular Systems
2013
IOSR Journal of Engineering
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TD-CDMA is appropriate to share the information because it uses the same channel on both uplink and down-link. It is also easy to share channel information between two stations. ...
Similar to TD-CDMA, it is possible to share the channel information between base station and mobile terminals in TDD-CDMA. ...
doi:10.9790/3021-03763745
fatcat:e37lvu2trndg5dudc4px7xxfvq
Iterative Channel Estimation for Orthogonal STBC MC-CDMA Systems over Realistic High-Mobility MIMO Channels
2006
2006 IEEE 17th International Symposium on Personal, Indoor and Mobile Radio Communications
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This paper considers a downlink multiple-input multipleoutput (MIMO) multi-carrier code division multiple access (MC-CDMA) system with pilot aided channel estimation (PACE) and iterative channel estimation ...
Due to the superposition of different users' spread data signals, zero-valued chips can occur after spreading, which can cause noise enhancement when using data estimates as reference signals in ICE. ...
ACKNOWLEDGMENT This research has been conducted within the Network of Excellence in Wireless Communications (NEWCOM) and 4MORE (4G MC-CDMA multiple antenna system On chip for Radio Enhancements). ...
doi:10.1109/pimrc.2006.253963
dblp:conf/pimrc/PortierSH06
fatcat:rgjhu4swynb6poot3ndzadv5ga
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